diff --git a/.gitignore b/.gitignore
index a547bf3..ee4e5e1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,6 +12,9 @@ dist
 dist-ssr
 *.local
 
+# Test coverage
+coverage
+
 # Editor directories and files
 .vscode/*
 !.vscode/extensions.json
diff --git a/package-lock.json b/package-lock.json
index e8f0774..a1f0ed8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18,6 +18,9 @@
       },
       "devDependencies": {
         "@eslint/js": "^9.39.1",
+        "@testing-library/jest-dom": "^6.9.1",
+        "@testing-library/react": "^16.3.1",
+        "@testing-library/user-event": "^14.6.1",
         "@types/node": "^24.10.1",
         "@types/react": "^19.2.5",
         "@types/react-dom": "^19.2.3",
@@ -27,12 +30,83 @@
         "eslint-plugin-react-hooks": "^7.0.1",
         "eslint-plugin-react-refresh": "^0.4.24",
         "globals": "^16.5.0",
+        "jsdom": "^27.4.0",
         "msw": "^2.12.7",
         "typescript": "~5.9.3",
         "typescript-eslint": "^8.46.4",
-        "vite": "^7.2.4"
+        "vite": "^7.2.4",
+        "vitest": "^4.0.16"
       }
     },
+    "node_modules/@acemir/cssom": {
+      "version": "0.9.30",
+      "resolved": "https://registry.npmjs.org/@acemir/cssom/-/cssom-0.9.30.tgz",
+      "integrity": "sha512-9CnlMCI0LmCIq0olalQqdWrJHPzm0/tw3gzOA9zJSgvFX7Xau3D24mAGa4BtwxwY69nsuJW6kQqqCzf/mEcQgg==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/@adobe/css-tools": {
+      "version": "4.4.4",
+      "resolved": "https://registry.npmjs.org/@adobe/css-tools/-/css-tools-4.4.4.tgz",
+      "integrity": "sha512-Elp+iwUx5rN5+Y8xLt5/GRoG20WGoDCQ/1Fb+1LiGtvwbDavuSk0jhD/eZdckHAuzcDzccnkv+rEjyWfRx18gg==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/@asamuzakjp/css-color": {
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/@asamuzakjp/css-color/-/css-color-4.1.1.tgz",
+      "integrity": "sha512-B0Hv6G3gWGMn0xKJ0txEi/jM5iFpT3MfDxmhZFb4W047GvytCf1DHQ1D69W3zHI4yWe2aTZAA0JnbMZ7Xc8DuQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@csstools/css-calc": "^2.1.4",
+        "@csstools/css-color-parser": "^3.1.0",
+        "@csstools/css-parser-algorithms": "^3.0.5",
+        "@csstools/css-tokenizer": "^3.0.4",
+        "lru-cache": "^11.2.4"
+      }
+    },
+    "node_modules/@asamuzakjp/css-color/node_modules/lru-cache": {
+      "version": "11.2.4",
+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-11.2.4.tgz",
+      "integrity": "sha512-B5Y16Jr9LB9dHVkh6ZevG+vAbOsNOYCX+sXvFWFu7B3Iz5mijW3zdbMyhsh8ANd2mSWBYdJgnqi+mL7/LrOPYg==",
+      "dev": true,
+      "license": "BlueOak-1.0.0",
+      "engines": {
+        "node": "20 || >=22"
+      }
+    },
+    "node_modules/@asamuzakjp/dom-selector": {
+      "version": "6.7.6",
+      "resolved": "https://registry.npmjs.org/@asamuzakjp/dom-selector/-/dom-selector-6.7.6.tgz",
+      "integrity": "sha512-hBaJER6A9MpdG3WgdlOolHmbOYvSk46y7IQN/1+iqiCuUu6iWdQrs9DGKF8ocqsEqWujWf/V7b7vaDgiUmIvUg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@asamuzakjp/nwsapi": "^2.3.9",
+        "bidi-js": "^1.0.3",
+        "css-tree": "^3.1.0",
+        "is-potential-custom-element-name": "^1.0.1",
+        "lru-cache": "^11.2.4"
+      }
+    },
+    "node_modules/@asamuzakjp/dom-selector/node_modules/lru-cache": {
+      "version": "11.2.4",
+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-11.2.4.tgz",
+      "integrity": "sha512-B5Y16Jr9LB9dHVkh6ZevG+vAbOsNOYCX+sXvFWFu7B3Iz5mijW3zdbMyhsh8ANd2mSWBYdJgnqi+mL7/LrOPYg==",
+      "dev": true,
+      "license": "BlueOak-1.0.0",
+      "engines": {
+        "node": "20 || >=22"
+      }
+    },
+    "node_modules/@asamuzakjp/nwsapi": {
+      "version": "2.3.9",
+      "resolved": "https://registry.npmjs.org/@asamuzakjp/nwsapi/-/nwsapi-2.3.9.tgz",
+      "integrity": "sha512-n8GuYSrI9bF7FFZ/SjhwevlHc8xaVlb/7HmHelnc/PZXBD2ZR49NnN9sMMuDdEGPeeRQ5d0hqlSlEpgCX3Wl0Q==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/@babel/code-frame": {
       "version": "7.27.1",
       "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.27.1.tgz",
@@ -425,6 +499,16 @@
         "@babel/core": "^7.0.0-0"
       }
     },
+    "node_modules/@babel/runtime": {
+      "version": "7.28.4",
+      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.28.4.tgz",
+      "integrity": "sha512-Q/N6JNWvIvPnLDvjlE1OUBLPQHH6l3CltCEsHIujp45zQUSSh8K+gHnaEX45yAT1nyngnINhvWtzN+Nb9D8RAQ==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
     "node_modules/@babel/template": {
       "version": "7.27.2",
       "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.27.2.tgz",
@@ -470,6 +554,141 @@
         "node": ">=6.9.0"
       }
     },
+    "node_modules/@csstools/color-helpers": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@csstools/color-helpers/-/color-helpers-5.1.0.tgz",
+      "integrity": "sha512-S11EXWJyy0Mz5SYvRmY8nJYTFFd1LCNV+7cXyAgQtOOuzb4EsgfqDufL+9esx72/eLhsRdGZwaldu/h+E4t4BA==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/csstools"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/csstools"
+        }
+      ],
+      "license": "MIT-0",
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/@csstools/css-calc": {
+      "version": "2.1.4",
+      "resolved": "https://registry.npmjs.org/@csstools/css-calc/-/css-calc-2.1.4.tgz",
+      "integrity": "sha512-3N8oaj+0juUw/1H3YwmDDJXCgTB1gKU6Hc/bB502u9zR0q2vd786XJH9QfrKIEgFlZmhZiq6epXl4rHqhzsIgQ==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/csstools"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/csstools"
+        }
+      ],
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      },
+      "peerDependencies": {
+        "@csstools/css-parser-algorithms": "^3.0.5",
+        "@csstools/css-tokenizer": "^3.0.4"
+      }
+    },
+    "node_modules/@csstools/css-color-parser": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/@csstools/css-color-parser/-/css-color-parser-3.1.0.tgz",
+      "integrity": "sha512-nbtKwh3a6xNVIp/VRuXV64yTKnb1IjTAEEh3irzS+HkKjAOYLTGNb9pmVNntZ8iVBHcWDA2Dof0QtPgFI1BaTA==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/csstools"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/csstools"
+        }
+      ],
+      "license": "MIT",
+      "dependencies": {
+        "@csstools/color-helpers": "^5.1.0",
+        "@csstools/css-calc": "^2.1.4"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "peerDependencies": {
+        "@csstools/css-parser-algorithms": "^3.0.5",
+        "@csstools/css-tokenizer": "^3.0.4"
+      }
+    },
+    "node_modules/@csstools/css-parser-algorithms": {
+      "version": "3.0.5",
+      "resolved": "https://registry.npmjs.org/@csstools/css-parser-algorithms/-/css-parser-algorithms-3.0.5.tgz",
+      "integrity": "sha512-DaDeUkXZKjdGhgYaHNJTV9pV7Y9B3b644jCLs9Upc3VeNGg6LWARAT6O+Q+/COo+2gg/bM5rhpMAtf70WqfBdQ==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/csstools"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/csstools"
+        }
+      ],
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      },
+      "peerDependencies": {
+        "@csstools/css-tokenizer": "^3.0.4"
+      }
+    },
+    "node_modules/@csstools/css-syntax-patches-for-csstree": {
+      "version": "1.0.22",
+      "resolved": "https://registry.npmjs.org/@csstools/css-syntax-patches-for-csstree/-/css-syntax-patches-for-csstree-1.0.22.tgz",
+      "integrity": "sha512-qBcx6zYlhleiFfdtzkRgwNC7VVoAwfK76Vmsw5t+PbvtdknO9StgRk7ROvq9so1iqbdW4uLIDAsXRsTfUrIoOw==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/csstools"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/csstools"
+        }
+      ],
+      "license": "MIT-0",
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/@csstools/css-tokenizer": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/@csstools/css-tokenizer/-/css-tokenizer-3.0.4.tgz",
+      "integrity": "sha512-Vd/9EVDiu6PPJt9yAh6roZP6El1xHrdvIVGjyBsHR0RYwNHgL7FJPyIIW4fANJNG6FtyZfvlRPpFI4ZM/lubvw==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/csstools"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/csstools"
+        }
+      ],
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      }
+    },
     "node_modules/@esbuild/aix-ppc64": {
       "version": "0.25.12",
       "resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.25.12.tgz",
@@ -1069,6 +1288,24 @@
         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
       }
     },
+    "node_modules/@exodus/bytes": {
+      "version": "1.8.0",
+      "resolved": "https://registry.npmjs.org/@exodus/bytes/-/bytes-1.8.0.tgz",
+      "integrity": "sha512-8JPn18Bcp8Uo1T82gR8lh2guEOa5KKU/IEKvvdp0sgmi7coPBWf1Doi1EXsGZb2ehc8ym/StJCjffYV+ne7sXQ==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": "^20.19.0 || ^22.12.0 || >=24.0.0"
+      },
+      "peerDependencies": {
+        "@exodus/crypto": "^1.0.0-rc.4"
+      },
+      "peerDependenciesMeta": {
+        "@exodus/crypto": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/@humanfs/core": {
       "version": "0.19.1",
       "resolved": "https://registry.npmjs.org/@humanfs/core/-/core-0.19.1.tgz",
@@ -1612,6 +1849,13 @@
         "win32"
       ]
     },
+    "node_modules/@standard-schema/spec": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/@standard-schema/spec/-/spec-1.1.0.tgz",
+      "integrity": "sha512-l2aFy5jALhniG5HgqrD6jXLi/rUWrKvqN/qJx6yoJsgKhblVd+iqqU4RCXavm/jPityDo5TCvKMnpjKnOriy0w==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/@tanstack/history": {
       "version": "1.140.0",
       "resolved": "https://registry.npmjs.org/@tanstack/history/-/history-1.140.0.tgz",
@@ -1983,6 +2227,104 @@
         "url": "https://github.com/sponsors/tannerlinsley"
       }
     },
+    "node_modules/@testing-library/dom": {
+      "version": "10.4.1",
+      "resolved": "https://registry.npmjs.org/@testing-library/dom/-/dom-10.4.1.tgz",
+      "integrity": "sha512-o4PXJQidqJl82ckFaXUeoAW+XysPLauYI43Abki5hABd853iMhitooc6znOnczgbTYmEP6U6/y1ZyKAIsvMKGg==",
+      "dev": true,
+      "license": "MIT",
+      "peer": true,
+      "dependencies": {
+        "@babel/code-frame": "^7.10.4",
+        "@babel/runtime": "^7.12.5",
+        "@types/aria-query": "^5.0.1",
+        "aria-query": "5.3.0",
+        "dom-accessibility-api": "^0.5.9",
+        "lz-string": "^1.5.0",
+        "picocolors": "1.1.1",
+        "pretty-format": "^27.0.2"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/@testing-library/jest-dom": {
+      "version": "6.9.1",
+      "resolved": "https://registry.npmjs.org/@testing-library/jest-dom/-/jest-dom-6.9.1.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@adobe/css-tools": "^4.4.0",
+        "aria-query": "^5.0.0",
+        "css.escape": "^1.5.1",
+        "dom-accessibility-api": "^0.6.3",
+        "picocolors": "^1.1.1",
+        "redent": "^3.0.0"
+      },
+      "engines": {
+        "node": ">=14",
+        "npm": ">=6",
+        "yarn": ">=1"
+      }
+    },
+    "node_modules/@testing-library/jest-dom/node_modules/dom-accessibility-api": {
+      "version": "0.6.3",
+      "resolved": "https://registry.npmjs.org/dom-accessibility-api/-/dom-accessibility-api-0.6.3.tgz",
+      "integrity": "sha512-7ZgogeTnjuHbo+ct10G9Ffp0mif17idi0IyWNVA/wcwcm7NPOD/WEHVP3n7n3MhXqxoIYm8d6MuZohYWIZ4T3w==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/@testing-library/react": {
+      "version": "16.3.1",
+      "resolved": "https://registry.npmjs.org/@testing-library/react/-/react-16.3.1.tgz",
+      "integrity": "sha512-gr4KtAWqIOQoucWYD/f6ki+j5chXfcPc74Col/6poTyqTmn7zRmodWahWRCp8tYd+GMqBonw6hstNzqjbs6gjw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/runtime": "^7.12.5"
+      },
+      "engines": {
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+      },
+      "peerDependencies": {
+        "@testing-library/dom": "^10.0.0",
+        "@types/react": "^18.0.0 || ^19.0.0",
+        "@types/react-dom": "^18.0.0 || ^19.0.0",
+        "react": "^18.0.0 || ^19.0.0",
+        "react-dom": "^18.0.0 || ^19.0.0"
+      },
+      "peerDependenciesMeta": {
+        "@types/react": {
+          "optional": true
+        },
+        "@types/react-dom": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/@testing-library/user-event": {
+      "version": "14.6.1",
+      "resolved": "https://registry.npmjs.org/@testing-library/user-event/-/user-event-14.6.1.tgz",
+      "integrity": "sha512-vq7fv0rnt+QTXgPxr5Hjc210p6YKq2kmdziLgnsZGgLJ9e6VAShx1pACLuRjd/AS/sr7phAR58OIIpf0LlmQNw==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=12",
+        "npm": ">=6"
+      },
+      "peerDependencies": {
+        "@testing-library/dom": ">=7.21.4"
+      }
+    },
+    "node_modules/@types/aria-query": {
+      "version": "5.0.4",
+      "resolved": "https://registry.npmjs.org/@types/aria-query/-/aria-query-5.0.4.tgz",
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+      "dev": true,
+      "license": "MIT",
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     "node_modules/@types/babel__core": {
       "version": "7.20.5",
       "resolved": "https://registry.npmjs.org/@types/babel__core/-/babel__core-7.20.5.tgz",
@@ -2028,6 +2370,24 @@
         "@babel/types": "^7.28.2"
       }
     },
+    "node_modules/@types/chai": {
+      "version": "5.2.3",
+      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-5.2.3.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/deep-eql": "*",
+        "assertion-error": "^2.0.1"
+      }
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+    "node_modules/@types/deep-eql": {
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+      "resolved": "https://registry.npmjs.org/@types/deep-eql/-/deep-eql-4.0.2.tgz",
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+      "license": "MIT"
+    },
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@@ -2369,6 +2729,117 @@
         "vite": "^4.2.0 || ^5.0.0 || ^6.0.0 || ^7.0.0"
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+    "node_modules/@vitest/expect": {
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+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@standard-schema/spec": "^1.0.0",
+        "@types/chai": "^5.2.2",
+        "@vitest/spy": "4.0.16",
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+        "chai": "^6.2.1",
+        "tinyrainbow": "^3.0.3"
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+      }
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+    "node_modules/@vitest/mocker": {
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+      "resolved": "https://registry.npmjs.org/@vitest/mocker/-/mocker-4.0.16.tgz",
+      "integrity": "sha512-yb6k4AZxJTB+q9ycAvsoxGn+j/po0UaPgajllBgt1PzoMAAmJGYFdDk0uCcRcxb3BrME34I6u8gHZTQlkqSZpg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@vitest/spy": "4.0.16",
+        "estree-walker": "^3.0.3",
+        "magic-string": "^0.30.21"
+      },
+      "funding": {
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+        "vite": "^6.0.0 || ^7.0.0-0"
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+        "msw": {
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+        },
+        "vite": {
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+    },
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+      },
+      "peerDependencies": {
+        "bufferutil": "^4.0.1",
+        "utf-8-validate": ">=5.0.2"
+      },
+      "peerDependenciesMeta": {
+        "bufferutil": {
+          "optional": true
+        },
+        "utf-8-validate": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/xml-name-validator": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/xml-name-validator/-/xml-name-validator-5.0.0.tgz",
+      "integrity": "sha512-EvGK8EJ3DhaHfbRlETOWAS5pO9MZITeauHKJyb8wyajUfQUenkIg2MvLDTZ4T/TgIcm3HU0TFBgWWboAZ30UHg==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/xmlchars": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/xmlchars/-/xmlchars-2.2.0.tgz",
+      "integrity": "sha512-JZnDKK8B0RCDw84FNdDAIpZK+JuJw+s7Lz8nksI7SIuU3UXJJslUthsi+uWBUYOwPFwW7W7PRLRfUKpxjtjFCw==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/y18n": {
       "version": "5.0.8",
       "resolved": "https://registry.npmjs.org/y18n/-/y18n-5.0.8.tgz",
diff --git a/package.json b/package.json
index 09419f3..3735812 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,10 @@
     "dev": "vite",
     "build": "tsc -b && vite build",
     "lint": "eslint .",
-    "preview": "vite preview"
+    "preview": "vite preview",
+    "test": "vitest",
+    "test:ui": "vitest --ui",
+    "test:run": "vitest run"
   },
   "dependencies": {
     "@tanstack/react-query": "^5.90.12",
@@ -20,6 +23,9 @@
   },
   "devDependencies": {
     "@eslint/js": "^9.39.1",
+    "@testing-library/jest-dom": "^6.9.1",
+    "@testing-library/react": "^16.3.1",
+    "@testing-library/user-event": "^14.6.1",
     "@types/node": "^24.10.1",
     "@types/react": "^19.2.5",
     "@types/react-dom": "^19.2.3",
@@ -29,9 +35,11 @@
     "eslint-plugin-react-hooks": "^7.0.1",
     "eslint-plugin-react-refresh": "^0.4.24",
     "globals": "^16.5.0",
+    "jsdom": "^27.4.0",
     "msw": "^2.12.7",
     "typescript": "~5.9.3",
     "typescript-eslint": "^8.46.4",
-    "vite": "^7.2.4"
+    "vite": "^7.2.4",
+    "vitest": "^4.0.16"
   }
 }
diff --git a/src/components/Header/index.tsx b/src/components/Header/index.tsx
index 8e22603..54a3566 100644
--- a/src/components/Header/index.tsx
+++ b/src/components/Header/index.tsx
@@ -1,5 +1,5 @@
 import { Link } from '@tanstack/react-router';
-import { useCartContext } from '../../contexts/CartContext';
+import { useCartContext } from '../../contexts';
 import styles from './Header.module.css';
 
 export const Header = () => {
diff --git a/src/components/ProductActions/index.tsx b/src/components/ProductActions/index.tsx
index c4282f4..0d1de19 100644
--- a/src/components/ProductActions/index.tsx
+++ b/src/components/ProductActions/index.tsx
@@ -1,5 +1,5 @@
 import { useProduct } from '../../hooks/useProduct';
-import { useCartContext } from '../../contexts/CartContext';
+import { useCartContext } from '../../contexts';
 import { Button } from '../ui/Button';
 import styles from './ProductActions.module.css';
 
diff --git a/src/components/ProductCard/index.tsx b/src/components/ProductCard/index.tsx
index 5932e9d..5d6da4b 100644
--- a/src/components/ProductCard/index.tsx
+++ b/src/components/ProductCard/index.tsx
@@ -2,7 +2,7 @@ import { Link } from '@tanstack/react-router';
 import type { Product } from '../../types/product';
 import { Card } from '../ui/Card';
 import { Button } from '../ui/Button';
-import { useCartContext } from '../../contexts/CartContext';
+import { useCartContext } from '../../contexts';
 import styles from './ProductCard.module.css';
 
 interface ProductCardProps {
diff --git a/src/components/ProductDetail/ProductDetail.test.tsx b/src/components/ProductDetail/ProductDetail.test.tsx
new file mode 100644
index 0000000..5ae8777
--- /dev/null
+++ b/src/components/ProductDetail/ProductDetail.test.tsx
@@ -0,0 +1,187 @@
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { render, screen, waitFor } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
+import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
+import { createMemoryHistory, createRootRoute, createRoute, createRouter, RouterProvider } from '@tanstack/react-router';
+import { ProductDetail } from './index';
+import { CartProvider } from '../../contexts';
+import type { Product } from '../../types/product';
+
+// Mock product data
+const mockProduct: Product = {
+  id: 1,
+  title: 'Test Product',
+  description: 'This is a test product description',
+  category: 'Electronics',
+  price: 99.99,
+  rating: 4.5,
+  stock: 10,
+  brand: 'TestBrand',
+  availabilityStatus: 'In Stock',
+  returnPolicy: '30 days',
+  thumbnail: 'https://example.com/thumbnail.jpg',
+  images: ['https://example.com/image1.jpg', 'https://example.com/image2.jpg'],
+};
+
+// Helper function to render component with all required providers
+const renderWithProviders = (
+  productData: Product | null = mockProduct
+) => {
+  const queryClient = new QueryClient({
+    defaultOptions: {
+      queries: {
+        retry: false,
+      },
+    },
+  });
+
+  // Get the product ID from the product data, or use 1 as default
+  const productId = productData?.id ?? 1;
+
+  // Pre-populate the query cache with product data
+  if (productData) {
+    queryClient.setQueryData(['product', productId], productData);
+  }
+
+  // Create router setup
+  const rootRoute = createRootRoute();
+  const productRoute = createRoute({
+    getParentRoute: () => rootRoute,
+    path: '/products/$productId',
+    component: () => (
+      <CartProvider>
+        <ProductDetail />
+      </CartProvider>
+    ),
+  });
+
+  const router = createRouter({
+    routeTree: rootRoute.addChildren([productRoute]),
+    history: createMemoryHistory({
+      initialEntries: [`/products/${productId}`],
+    }),
+  });
+
+  return render(
+    <QueryClientProvider client={queryClient}>
+      <RouterProvider router={router} />
+    </QueryClientProvider>
+  );
+};
+
+describe('ProductDetail', () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it('should render correctly with valid product data', async () => {
+    renderWithProviders();
+
+    // Check if all key product information is displayed
+    await waitFor(() => {
+      expect(screen.getByText('Test Product')).toBeInTheDocument();
+    });
+
+    expect(screen.getByText('$99.99')).toBeInTheDocument();
+    expect(screen.getByText('This is a test product description')).toBeInTheDocument();
+    
+    // Check meta information
+    expect(screen.getByText('TestBrand')).toBeInTheDocument();
+    expect(screen.getByText('Electronics')).toBeInTheDocument();
+    expect(screen.getByText('10')).toBeInTheDocument();
+    expect(screen.getByText('⭐ 4.5')).toBeInTheDocument();
+
+    // Check if image is rendered
+    const image = screen.getByAltText('Test Product');
+    expect(image).toBeInTheDocument();
+    expect(image).toHaveAttribute('src', 'https://example.com/image1.jpg');
+
+    // Check if "Add to Cart" button is rendered
+    expect(screen.getByRole('button', { name: /add to cart/i })).toBeInTheDocument();
+  });
+
+  it('should display key product information (title, price, description)', async () => {
+    renderWithProviders();
+
+    await waitFor(() => {
+      expect(screen.getByText('Test Product')).toBeInTheDocument();
+    });
+
+    // Verify title
+    const title = screen.getByText('Test Product');
+    expect(title).toBeInTheDocument();
+    expect(title.tagName).toBe('H1');
+
+    // Verify price
+    const price = screen.getByText('$99.99');
+    expect(price).toBeInTheDocument();
+
+    // Verify description
+    const description = screen.getByText('This is a test product description');
+    expect(description).toBeInTheDocument();
+  });
+
+  it('should handle product data with missing optional fields', async () => {
+    const productWithoutBrand: Product = {
+      ...mockProduct,
+      brand: undefined,
+    };
+
+    renderWithProviders(productWithoutBrand);
+
+    await waitFor(() => {
+      expect(screen.getByText('Test Product')).toBeInTheDocument();
+    });
+
+    // Should display "N/A" for missing brand
+    expect(screen.getByText('N/A')).toBeInTheDocument();
+  });
+
+  it('should render navigation back to products list', async () => {
+    renderWithProviders();
+
+    await waitFor(() => {
+      expect(screen.getByText('Test Product')).toBeInTheDocument();
+    });
+
+    // Check if back link is present
+    const backLink = screen.getByRole('link', { name: /back to products/i });
+    expect(backLink).toBeInTheDocument();
+    expect(backLink).toHaveAttribute('href', '/');
+  });
+
+  it('should handle user interaction - adding product to cart', async () => {
+    const user = userEvent.setup();
+    renderWithProviders();
+
+    await waitFor(() => {
+      expect(screen.getByText('Test Product')).toBeInTheDocument();
+    });
+
+    const addToCartButton = screen.getByRole('button', { name: /add to cart/i });
+    expect(addToCartButton).toBeInTheDocument();
+
+    // Click the "Add to Cart" button
+    await user.click(addToCartButton);
+
+    // The button should still be clickable after adding to cart
+    expect(addToCartButton).toBeEnabled();
+  });
+
+  it('should display product image with fallback to thumbnail', async () => {
+    const productWithoutImages: Product = {
+      ...mockProduct,
+      images: [],
+    };
+
+    renderWithProviders(productWithoutImages);
+
+    await waitFor(() => {
+      expect(screen.getByText('Test Product')).toBeInTheDocument();
+    });
+
+    // Should fall back to thumbnail when images array is empty
+    const image = screen.getByAltText('Test Product');
+    expect(image).toHaveAttribute('src', 'https://example.com/thumbnail.jpg');
+  });
+});
diff --git a/src/contexts/index.ts b/src/contexts/index.ts
new file mode 100644
index 0000000..3c5e69b
--- /dev/null
+++ b/src/contexts/index.ts
@@ -0,0 +1,2 @@
+export { CartContext, CartProvider } from './CartContext';
+export { useCartContext } from './useCartContext';
diff --git a/src/main.tsx b/src/main.tsx
index f520ded..2f294dd 100644
--- a/src/main.tsx
+++ b/src/main.tsx
@@ -4,7 +4,7 @@ import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
 import { ReactQueryDevtools } from '@tanstack/react-query-devtools';
 import { RouterProvider, createRouter } from '@tanstack/react-router';
 import { routeTree } from './routeTree.gen';
-import { CartProvider } from './contexts/CartContext';
+import { CartProvider } from './contexts';
 import './index.css';
 
 const queryClient = new QueryClient({
diff --git a/src/test/setup.ts b/src/test/setup.ts
new file mode 100644
index 0000000..7b0828b
--- /dev/null
+++ b/src/test/setup.ts
@@ -0,0 +1 @@
+import '@testing-library/jest-dom';
diff --git a/vite.config.ts b/vite.config.ts
index 59faa8f..39d7513 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -1,4 +1,4 @@
-import { defineConfig } from 'vite';
+import { defineConfig } from 'vitest/config';
 import react from '@vitejs/plugin-react';
 import { TanStackRouterVite } from '@tanstack/router-vite-plugin';
 
@@ -12,4 +12,9 @@ export default defineConfig({
     }),
     TanStackRouterVite(),
   ],
+  test: {
+    globals: true,
+    environment: 'jsdom',
+    setupFiles: './src/test/setup.ts',
+  },
 });